1268116 九、發明說明： 【發明所屬之技術領域】 本專利係關於麥克風，且更特定言之，本專利係關於能 併入一聲阻元件之駐極式電容麥克風。 【先前技術】 /向純式電容麥克風(ECM) 一般包括一外殼、一振動 膜及％〜、成、-後板與一能自後板來分離振動膜與環總 成的間隔物。ECM亦可包括一放大器，其可置放於一已電 力耦接至後板的印刷電路板上。將此等組件安裝於外殼 内種用於操作ECM之方式為藉由允許聲振動進入外殼 並允奸振動膜對其作出回廡义 U下出口應而發生振動。該處於振動狀態 的振動膜會引起振動膜與後板之間發生電容改變，其可伯 測作為H虎。猎由一合適導體（諸如電線），將該電訊號 麵接至放大器以自ECM產生一輸出。 一般而言’單向ECM應提供高的效能及控制，使得可加 強來自麥克風前部的聲音#、、古 ^ 、’肩除來自後部的聲音。可將單 ^ 、定向型ECM，以便藉由增加第二聲音入口埠來 =關於來自麥克風前部之聲音的效能，使得 ^, 自麥克風别部進入之聲音直接到達撫 動膜。藉由電阻/電容（Rc)棼 運振 入的舞立* (RC)聲學網路來延遲自麥克風後部進 ^的尸耳曰。可產生此延遲，使得能增強來自麥克 進 聲音並消除來自後部的聲音。 月1邻的 為建構RC聲學網路，可在第二聲音人 置放一聲阻材料。此材斜可山@ 早/、振動«之間 ’ ϋ由耗結塑料、黏結塑料、雷 93413.doc I268116 鑽孔碟片製成，且使聲音 μ n P *直於該材料之平面來傳播經 卿。忍即，通常以-具有第-表面及第二表面之薄 片或層的形式來提供該材料。 / 宜主二 接者使聲音以大體上垂直於 弟及第一表面而進行傳播。 該聲阻材料之此配置且右 且 置/、有右干缺點。該等聲阻材料通常 /、有一相對較大量的可變性 七各 欠性其對麥克風之方向性效能且 有重大影響，雷射鑽孔碟片兑 /、 旦沾1α 乃』徒仏目刖可利用材料之最小 里的可，史性，但成本較高。同樣，該材料之物理體積限制 了職之尺寸，從而使得難以縮減尺寸。體積限制 因此，需要廉價的、能簡單製造並可縮 寸之ECM。 J人 【發明内容】 一種駐極式電容麥克風苴 心 兄乳*包括—外殼、一置放於該外 殼内之振動膜、第一盥第-簦立 路 一弟一弇9入口埠及一聲阻材料，該 戽阻材料被置放於該外殘 哎±“ ， x外成内及苐一入口埠與振動膜之間的 聲軌中。該聲阻可淮_半I* 至振動膜的後板電力耦 接至一置放於該外殼内之放大器。 【實施方式】 ==易於作出多種修正及替代形式，但是已藉由 貫例將特疋貫把例展示於圖式中且本文將詳細描述此等實 施例。然而應瞭解，本揭示案並不意欲將本發明限制於所 描速之特殊形式，而是相反’本發明意欲涵蓋屬於由附加 之申睛專利範圍所界定的本發明之精神與範圍内的所有修 正、替代物及均等物。 93413.doc -6- 1268116 如將自對貫施例所作的以下描述中來瞭解，職可包括 一用於麥克風之外殼。該外殼可具有第—聲音人口璋及— 與該第-聲音入口埠分離並間隔開的第二聲音入口埠。可 在該外殼内置放-振動膜，其中該振動膜具有第一面與第 -面。可將該振動膜之第—面聲輕接至第—聲音入口璋， 並可將該振動膜之第二面聲麵接至第二聲音入口埠。可在 =殼内及在第二聲音入口璋與振動膜之第二面之間置放一 =元件。該聲阻元件可具有第—表面及與該第一表面分 離並間隔開的第二表面在 之望一“㈠ 表面與第二表面之間延伸 〇 帛一表面與第二表面之間延伸之第二邊 了將：將第一邊緣以聲學傳遞之方式耦接至第二入口埠且 =二邊緣以聲學傳遞之方式輕接至振動膜之第二面， 動聲Γ經由聲阻元件自第二聲音入口谭傳遞至振 之第二邊緣。 狀第-邊緣傳遞至聲阻元件 第：：:ECM可包括-用於麥克風之外殼。該外殼可具有 第一聲音入口埠及一盥嗜筮一咬 第二聲音人口埠^ 入口4分離並間隔開的 動膜具有第-面^ 殼内置放一振動膜，其中該振 至第—A立 ^ —面。可將該振動膜之第一面聲耦接 二聲立:=口蜂’並可將該振動膜之第二面聲麵接至第 θ 可將相元件置放於外殼内及第二聲音入 阻元;=於該振動膜之第二面的腔室之間。可形成聲 聲學傳二二具有外緣與内緣之法蘭部分。可將外緣以 耳予傳遞之方式搞接至第二聲音入口痒，且可將内緣以聲 93413.doc 1268116 予傳遞之方式搞接至腔室以形成一電阻-電容網路。 此外，ECM可包括一用於麥克風之外殼，其中該外殼具 有一聲音入口琿。可將一振動膜置放於該外殼内，且可將 該振動膜聲耦接至聲音入口埠。可在外殼内及聲音入口埠 與振動膜之間置放一聲阻元件。可將一後板耦接至振動 膜，以將振動膜之運動轉換成一電訊號。亦可提供一放大 器以提供一來自ECM之輸出，且聲阻材料可電力耦接後板 與放大器。就本文所述之ECM實施例而言，聲阻材料可為 編織金屬、燒結金屬、黏結金屬、編織塑料、燒結塑料、 黏結塑料、編織之有機纖維、燒結之有機纖維或黏結之有 機纖維。 參見圖1，單向駐極式電容麥克風（ECM)1〇〇可包括外殼 101，该外殼1 ο 1包括杯形外殼部分2 04與底部外殼部分 120。例如，可藉由打摺、焊接或黏結來將杯形外殼部分1〇4 與底部外殼部分120接合在一起。外殼101可由一導電材料 製成，或可使其上具有一導電材料塗層。在所示之實施例 中，外殼101係由鋁製成。如圖」所示，在杯形外殼部分1〇4 之表面105上形成了一通孔或聲音埠1〇6，以允許聲音進入 腔室109。將一通常由織物或毛氈製成之防塵罩102黏附於 杯形外设部分104，其中藉由一黏著劑來覆蓋通孔丨〇6以防 止碎片進入麥克風100。 麥克風1〇〇進一步包括一置放於杯形外殼部分1〇4之底面 107上的環總成108。環總成1〇8包括一連接至環構件 或振動膜支撐件之振動性振動膜1〇8a。環構件1⑽b可由不 93413.doc 1268116 銹鋼製成；然而可利用任何導電材料或包括導電性塗層之 材料，包括黃銅或錫。環總成⑽之振動性振動膜·必須 能夠回應於聲波而發生振動。同樣地，振動性振動膜· y由薄聚合物膜製成。舉例而言，振動膜可為6量規（gauge) 厚之聚對苯二甲酸乙二g旨薄膜（通常可以mylar商標講得） 或可為任何類㈣料。將該振動性振動膜黏附至環總成1〇8 之環構件娜。麥克風⑽另外還包括間隔片ug,其被置 放於環總成108與後板112之間，該後板m用於將環總成 ⑽與後板112分離。間隔片11〇之厚度設定了環總成1〇8與 後板112之間的間距。可形成後板112以包括複數個聲孔 114，從而允許進人外殼1()1之聲音振動能使振動膜⑽&產 生振動。後板112可由不銹鋼製成。後板112可另外具有一 鍍有-極化介電薄膜或駐極體材料的第—表面。舉例而 曰，可在後板112之第一表面上塗覆或鍍上鐵弗龍材料。將 該經塗覆之後板112稱作駐極體總成之固定電極。此外，對 X、，’里k覆之後板112進行靜電充電 charged) ° 將間隔片110置放於環總成108與外殼1〇1的壁之間，以將 振動性振動膜l〇8a與外殼101電分離。間隔片11〇通常由非 導電材料製成’且舉例而言可由200量規（gauge)之聚脂薄 膜塑膠製成。如圖1所示’間隔片110為間隔開後板112而在 與ί哀總成108之間提供了 一設定距離。此距離在後板112與 振動性振動膜108a之間提供了一界定間隙，從而使得空氣 月匕夠在振動膜108a與後板112之間運動。 93413.doc 1268116 位於後板112上之介電薄膜或駐極體材料與振動性振動 膜一起合作產生了一電訊號，該電訊號代表伴隨於振動膜 108a之聲學能量。如可為一般的熟習此項技術者所瞭解， 麥克風100之操作係基於在外部空氣（聲音）振動之影響 下，一固定電極、後板112與一可移動電極、振動性振動膜 108a之間所產生的電容變化。此電容變化與氣壓變化成比 例，且可經由電子放大器122而轉換成放大之聲音振動。接 著放大器122將電容變化轉換並放大成一能代表彼等變化 的電訊號。 麥克風100亦可包括圖2-4所示之額外聲音入口埠13〇。舉 例而言，藉由在位於法蘭132周圍之選定區域處的杯形外殼 部分104上對法蘭132進行不完全打摺而在麥克風1〇〇之後 部形成聲音入口埠130，將該等聲音入口埠13〇聲耦接至鄰 近於振動膜l〇8a的第二腔室144。為影響在麥克風1〇〇前部 處接收到的聲音能量的附加結合並消除在麥克風後部處接 收到的聲音能量，可提供聲阻元件丨丨8。該聲阻元件丨丨8可 為編織金屬、燒結金屬、黏結金屬、編織塑料、燒結塑料、 黏結塑料、編織之有機纖維、燒結之有機纖維、黏結之有 機纖維。在所示之實施例中，該聲阻材料為導電金屬絲布， 諸如不銹鋼絲布。同樣地，聲阻元件丨丨8亦可具有電力互連 後板112與電子放大器122之功能，其被置放跨過外殼1〇1 之頂面136與底部外殼120。 思即，藉由連續參看圖3並參看圖5及圖6，將聲阻元件118 置放於電子放大器122與後板112之間。藉由法蘭或碟片部 93413.doc -10· 1268116 分111及具有法蘭盤（lip)U5之一個壁或圓柱部分113，來形 成聲阻元件118使其具有一頂帽狀之形狀。法蘭部分111電 力搞接至放大器電路板112，同時法蘭盤115導電性地喷合 板 藉此將後板112電力連接至位於放大器電路板122 上的組件。後板m藉由支撑構件116與外殼1〇1之導電部分 而與地面形成電力連接。如所述，聲阻元件1丨8可由一導電 金屬線織物製成，諸如不錢鋼；、然而，可在ECM之多個實 施例中利用任何導電材料或具有―導電塗層之材料，其中 耳阻材料118還用於提供後板112與放大器之電力麵接。 *聲阻το件亦具有延遲冑音自底部外殼部分進入通過 聲音入口蟑13〇的作用。此聲音圍繞放大器電路板a〗而傳 遞並經由聲阻元件118進人第二腔室144。更敎言之，聲 阻元件之法蘭部分⑴具有第一表面136、第二表面138、第 一邊緣uo及第二邊緣142。在外殼1〇1内產生一聲軌，使得 可導致聲音進人第—邊緣14G處之聲阻元件ιΐ8，從而以大 體上平行於表面136與138之方式傳播通過法蘭部分m以 經由第二邊緣142離開聲阻材料並進入第二腔室144。此完 全不同於其令可導致聲音以大體上垂直於表面136旬38之 方式傳遞通過聲阻元件的典型組態。或者，吾人應瞭解， 可使聲音在聲阻材料之圓柱體的壁内軸向地自第一末端邊 緣傳播至第二末端邊緣’或在其它類似組態中引導聲音使 其在聲阻材料之一表面内以與該表面之法線相對的方式來 傳播。此配置具有許多優點。 可將腔室144組態為一相對較大之聲容，其充當電阻-電 93413.doc 1268116 谷RC、.罔路之電谷，，c”。藉由增加電容值，可使電阻變得 二小’因而更易於控制。可藉由使用所述之金屬絲布，且 精由配置聲軌以使聲音自邊緣⑽傳播至邊緣142，來獲得 一疋的R值。如此項技術中所熟知，冑由調整由聲阻元件 118及第一腔至144形成之狀網路的RC值，聲阻元件118能 夠設定麥克風100之方向性。1268116 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD This patent relates to microphones and, more particularly, to an electret condenser microphone that can be incorporated into an acoustically resistive element. [Prior Art] / The pure condenser microphone (ECM) generally includes a casing, a diaphragm, and a spacer, a rear plate, and a spacer capable of separating the diaphragm and the ring assembly from the rear plate. The ECM can also include an amplifier that can be placed on a printed circuit board that is electrically coupled to the back panel. The components are mounted in the housing for operation of the ECM by allowing acoustic vibrations to enter the housing and permitting the diaphragm to respond to it. The vibrating diaphragm causes a change in capacitance between the diaphragm and the rear plate, which can be measured as a H tiger. Hunting is performed by a suitable conductor (such as a wire) that connects the signal to the amplifier to produce an output from the ECM. In general, a one-way ECM should provide high performance and control so that the sound from the front of the microphone can be enhanced, and the sound from the back can be removed. The single ^, directional ECM can be used to increase the efficiency of the sound from the front of the microphone by adding a second sound port 使得 such that the sound coming in from the microphone directly reaches the squeezing film. The turrets from the rear of the microphone are delayed by the resistance/capacitance (Rc) 振 舞 * ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( This delay can be generated to enhance the sound from the mic and eliminate the sound from the back. In the month of the month, to construct the RC acoustic network, an acoustic material can be placed on the second sound person. This material is oblique mountain @早/, vibration «between' ϋ is made of plastic, bonded plastic, Ray 93413.doc I268116 drilled disc, and the sound μ n P * spreads directly to the plane of the material Jing Qing. Tolerance, the material is typically provided in the form of a sheet or layer having a first surface and a second surface. / The owner of the second is to spread the sound in a direction substantially perpendicular to the younger brother and the first surface. This arrangement of the acoustically resistive material has a right-hand side/and a right-hand side defect. The acoustically resistive materials usually have a relatively large amount of variability, and each of them has a significant influence on the directional performance of the microphone. The laser drilling discs are// The use of materials in the smallest, historic, but higher cost. Also, the physical size of the material limits the size of the job, making it difficult to reduce the size. Volume Limits Therefore, there is a need for an inexpensive ECM that can be easily manufactured and compacted. J person [Summary] An electret condenser microphone 苴心哥乳* includes a casing, a diaphragm placed in the casing, a first 盥第盥簦立一一一一弇9 entrance 埠 and a sound a resistive material placed in the outer track “±, x outer and the sound track between the inlet 埠 and the diaphragm. The acoustic resistance can be _ half I* to the diaphragm The rear panel is electrically coupled to an amplifier placed in the housing. [Embodiment] == It is easy to make various corrections and alternative forms, but the example has been shown in the drawings by way of example and this article will The embodiments are described in detail. It is to be understood that the invention is not intended to be limited to the particular form of the present invention, but rather, the invention is intended to cover the invention as defined by the scope of the appended claims. All modifications, alternatives, and equivalents within the spirit and scope of the invention. 93413.doc -6- 1268116 As will be understood from the following description of the embodiment, the appliance may include a housing for the microphone. Have the first sound population and - with the first - a second sound inlet 埠 separated and spaced apart by the sound inlet 可. A vibrating membrane can be built in the outer casing, wherein the vibrating membrane has a first surface and a first surface. The first surface sound of the vibrating membrane can be lightly connected to a first sound inlet 璋, and the second surface acoustic surface of the diaphragm is coupled to the second sound inlet 埠. A lie can be placed between the housing and the second sound inlet 璋 and the second side of the diaphragm The element may have a first surface and a second surface spaced apart from and spaced apart from the first surface between the "one surface" and the second surface extending between the first surface and the second surface The second side of the extension will be: the first edge is acoustically coupled to the second inlet 埠 and the two edges are acoustically coupled to the second side of the diaphragm, and the acoustic squeezing via the acoustically resistive element Passing from the second sound inlet Tan to the second edge of the vibration. The first-edge is transmitted to the acoustically resistive element. The :::ECM can include - an outer casing for the microphone. The outer casing may have a first sound inlet port and a second bite-sounding second sound population. The movable film separated and spaced apart from the inlet 4 has a first-side casing and a vibrating membrane built therein, wherein the vibration is to the first-A Stand ^ face. The first surface of the diaphragm can be acoustically coupled to the second sound: = mouth bee' and the second surface of the diaphragm can be connected to the θ, the phase element can be placed in the outer casing and the second sound is inserted a blocking element; = between the chambers on the second side of the diaphragm. Acoustic acoustics can be formed. Two or two flange portions having an outer edge and an inner edge. The outer edge can be connected to the second sound inlet itch by ear transfer, and the inner edge can be transferred to the chamber by the sound 93413.doc 1268116 to form a resistor-capacitor network. Additionally, the ECM can include a housing for a microphone, wherein the housing has an acoustic inlet port. A diaphragm can be placed in the housing and the diaphragm can be acoustically coupled to the sound inlet port. An acoustical element can be placed in the housing and between the sound inlet 埠 and the diaphragm. A rear plate can be coupled to the diaphragm to convert the motion of the diaphragm into an electrical signal. An amplifier can also be provided to provide an output from the ECM, and the acoustically resistive material can be electrically coupled to the backplate and the amplifier. For the ECM embodiments described herein, the acoustically resistive material can be a woven metal, a sintered metal, a bonded metal, a woven plastic, a sintered plastic, a bonded plastic, a woven organic fiber, a sintered organic fiber, or a bonded organic fiber. Referring to Fig. 1, a one-way electret condenser microphone (ECM) 1A can include a housing 101 that includes a cup-shaped housing portion 206 and a bottom housing portion 120. For example, the cup-shaped outer casing portion 1〇4 can be joined to the bottom outer casing portion 120 by folding, welding or bonding. The outer casing 101 may be made of a conductive material or may have a coating of a conductive material thereon. In the illustrated embodiment, the outer casing 101 is made of aluminum. As shown in the figure, a through hole or sound 埠1〇6 is formed on the surface 105 of the cup-shaped outer casing portion 1〇4 to allow sound to enter the chamber 109. A dust cover 102, usually made of fabric or felt, is adhered to the cup-shaped peripheral portion 104, wherein the through-holes 6 are covered by an adhesive to prevent debris from entering the microphone 100. The microphone 1 further includes a ring assembly 108 disposed on the bottom surface 107 of the cup-shaped outer casing portion 1〇4. The ring assembly 1 8 includes a vibrating diaphragm 1 8a connected to a ring member or a diaphragm support. The ring member 1 (10) b may be made of stainless steel not 93413.doc 1268116; however, any electrically conductive material or material including a conductive coating may be utilized, including brass or tin. The vibrating diaphragm of the ring assembly (10) must be able to vibrate in response to sound waves. Similarly, the vibrating diaphragm·y is made of a thin polymer film. For example, the vibrating membrane can be a 6 gauge thick polyethylene terephthalate film (usually available under the mylar trademark) or can be any type (4). The vibrating diaphragm is adhered to the ring member Na of the ring assembly 1〇8. The microphone (10) additionally includes a spacer ug that is placed between the ring assembly 108 and the rear plate 112 for separating the ring assembly (10) from the rear plate 112. The thickness of the spacer 11〇 sets the spacing between the ring assembly 1〇8 and the rear plate 112. The rear plate 112 can be formed to include a plurality of sound holes 114, thereby allowing the acoustic vibration of the casing 1 (1) to vibrate the diaphragm (10) & The rear plate 112 can be made of stainless steel. The back plate 112 may additionally have a first surface plated with a polarizing dielectric film or an electret material. For example, a Teflon material may be coated or plated on the first surface of the back plate 112. The coated plate 112 is referred to as a fixed electrode of the electret assembly. In addition, the X, , 'received after the plate 112 is electrostatically charged) ° Place the spacer 110 between the ring assembly 108 and the wall of the casing 1〇1 to connect the vibrating diaphragm 10 8a with The outer casing 101 is electrically separated. The spacer 11 is typically made of a non-conductive material' and can be made, for example, from a gauge rubber film of 200 gauge. As shown in Fig. 1, the spacer 110 is spaced apart from the rear panel 112 to provide a set distance between the spacer assembly 108 and the wiper assembly 108. This distance provides a defined gap between the rear plate 112 and the vibrating diaphragm 108a, so that the air sill is moved between the diaphragm 108a and the rear plate 112. 93413.doc 1268116 The dielectric film or electret material on the back plate 112 cooperates with the vibrating diaphragm to produce an electrical signal representative of the acoustic energy associated with the diaphragm 108a. As can be understood by those skilled in the art, the operation of the microphone 100 is based on the influence of external air (sound) vibration, between a fixed electrode, the rear plate 112 and a movable electrode, the vibrating diaphragm 108a. The resulting capacitance changes. This change in capacitance is proportional to the change in air pressure and can be converted to amplified acoustic vibration via electronic amplifier 122. Amplifiers 122 then convert and amplify the capacitance changes into electrical signals that represent their variations. Microphone 100 may also include additional sound portals 13A as shown in Figures 2-4. For example, by incompletely folding the flange 132 over the cup-shaped outer casing portion 104 at a selected area around the flange 132, a sound inlet port 130 is formed behind the microphone 1〇〇, the sound is made The entrance port 13 is acoustically coupled to the second chamber 144 adjacent to the diaphragm 10a. To accommodate the additional combination of sound energy received at the front of the microphone 1 and to eliminate the acoustic energy received at the rear of the microphone, an acoustically resistive element 丨丨8 can be provided. The acoustic resistance element 丨丨8 may be woven metal, sintered metal, bonded metal, woven plastic, sintered plastic, bonded plastic, woven organic fiber, sintered organic fiber, bonded organic fiber. In the illustrated embodiment, the acoustically resistive material is a conductive wire cloth, such as a stainless steel wire cloth. Similarly, the acoustically resistive element 丨丨8 can also have the function of electrically interconnecting the rear plate 112 and the electronic amplifier 122 that is placed across the top surface 136 and the bottom outer casing 120 of the outer casing 101. That is, by continuously referring to FIG. 3 and referring to FIGS. 5 and 6, the acoustic resistance element 118 is placed between the electronic amplifier 122 and the rear plate 112. The acoustic resistance element 118 is formed to have a cap-like shape by a flange or disc portion 93413.doc -10·1268116 minutes 111 and a wall or cylindrical portion 113 having a flange U5. The flange portion 111 is electrically coupled to the amplifier circuit board 112 while the flange 115 electrically conductively bonds the board to thereby electrically connect the rear board 112 to the components located on the amplifier circuit board 122. The rear plate m is electrically connected to the ground by the support member 116 and the conductive portion of the outer casing 101. As noted, the acoustic resistance element 丨8 can be made of a conductive metal wire fabric, such as stainless steel; however, any conductive material or material having a "conductive coating" can be utilized in various embodiments of the ECM, wherein The ear block material 118 is also used to provide electrical connection of the back plate 112 to the amplifier. *The acoustic resistance το also has the effect of delaying the sound from the bottom outer casing portion into the sound inlet port 13〇. This sound is transmitted around the amplifier circuit board a and enters the second chamber 144 via the acoustic resistance element 118. More specifically, the flange portion (1) of the resistive element has a first surface 136, a second surface 138, a first edge uo, and a second edge 142. An acoustic track is created within the outer casing 101 such that sound can enter the acoustically resistive element ι 8 at the first edge 14G to propagate through the flange portion m in a manner generally parallel to the surfaces 136 and 138 via the second Edge 142 exits the acoustically resistive material and enters second chamber 144. This is completely different from the typical configuration in which the sound can be transmitted through the acoustically resistive element in a manner generally perpendicular to the surface 136. Alternatively, it should be understood that the sound can be propagated axially from the first end edge to the second end edge in the wall of the cylinder of acoustically resistive material or in other similar configurations to direct the sound to the acoustically resistive material. A surface propagates in a manner opposite the normal to the surface. This configuration has many advantages. The chamber 144 can be configured as a relatively large sound volume, which acts as a resistor-electricity 93413.doc 1268116 valley RC, a valley of electricity, c". By increasing the capacitance value, the resistance can be made Two small's are thus easier to control. A R value can be obtained by using the wire cloth and by arranging the sound track to propagate sound from the edge (10) to the edge 142. As is well known in the art, The acoustic resistance element 118 is capable of setting the directivity of the microphone 100 by adjusting the RC value of the network formed by the acoustic resistance element 118 and the first cavity to 144.
因此根據所展示及描述之實施例，聲音在第—聲音入口 皐處進入ECM並進入鄰近於振動膜之第_面的第一腔室。 聲音亦藉由在該材料之一表面内自材料之第一邊緣傳播至 第二邊緣而在第二聲音人口埠處進人職並進人_鄰近於 該振動膜之第二面的第二腔室。聲阻材料與第二腔室形成 了 RC網路，使得進人第_腔室之聲音得到增強，同時進入 第一腔室之聲音得以消除。 本文所引用之所有參照案（包括公開案、專利中請案及專 利案）皆以引用的方式併入本文中，該引用的程度就如同已Thus, in accordance with the embodiment shown and described, the sound enters the ECM at the first sound inlet port and enters the first chamber adjacent the first face of the diaphragm. The sound also enters and enters the second sound population from the first edge of the material to the second edge on the surface of one of the materials - a second chamber adjacent to the second side of the diaphragm . The acoustically resistive material forms an RC network with the second chamber, so that the sound entering the first chamber is enhanced while the sound entering the first chamber is eliminated. All references cited in this document (including publications, patent claims, and patents) are incorporated herein by reference, as if
個別地及特定地將每_參照案以弓丨用的方式併人並將其全 文闡述於本文中一般。 除非本文另有指示或明顯與上下文相抵觸，否則應將在 用於描述本發明之上下文中（尤其在以下巾請專利範圍之 ^下文中）之所用術語與”該”及類似指示物認為覆蓋了 單，與複數兩者。除非本文另有指示，否則本文所述之值 的範圍僅意欲用作—種絲個別地針對屬於該範圍内之每 個單獨值的速§己方法，且每—個單獨值如同本文所個別 地描述般而被併入本說明書中。除非本文另有指示或明顯 93413.doc -12- 1268116 與上下文相抵觸，否則 述之所有方法。使用本文所提 性語言(例如，"諸如")僅意欲 =有實例或例示 非另外主張，否f也说明本發明，且除 之“不應被理解為可指示 本次月曰令 義的非主張之元件。 饤對仏本發明具有重要意Individually and specifically, each _ reference case is used in the form of a bow and is described in the text. Unless otherwise indicated herein or clearly contradicted by the context, the terms used in the context of the present invention (especially in the following claims) Single, and plural. The scope of the values recited herein is intended to be used solely as a method of singularity for each individual value within the range, and each individual value is individually as herein, unless otherwise indicated herein. The description is incorporated into this specification. All methods are described unless otherwise indicated herein or apparently 93413.doc -12- 1268116 is inconsistent with the context. Use of the language described herein (eg, "such as ") is only intended to be an instance or exemplification of non-other claims, and no f also illustrates the invention, and is not to be construed as indicating a The non-claimed component. 饤 is important to the invention
^描述了本發明之若干較佳㈣_ 1 口之用於執行本發明的最佳模式。應理解，所說HI 例僅為例示性，且不應認為其限制了 【圖式簡單制】 之耗圍。 圖1為-分解圖’其說明了一駐極式電容麥克 一實施例； y 圖2為圖1中所示之ECM的仰視圖； 圖3為沿圖2之線3-3的截面圖； 圖4為沿圖3之圈4-4内的局部截面圖； 圖5為可用於ECM中之一金屬絲布的俯視圖；及 圖6為沿圖5之線χ-χ的截面圖。 【主要元件符號說明】 100 麥克風 101 外殼 102 防塵罩 104 杯形外殼部分 1〇5 表面 106 聲音埠 93413.doc 1268116 107 底面 108 環總成 108a 振動性振動膜 108b 環構件 109 腔室 110 間隔片 111 碟片部分 112 後板 113 圓柱部分 114 聲孔 115 法蘭盤 116 支撐構件 118 聲阻元件 120 底部外殼部分 122 放大器 130 聲音入口埠 132 法蘭 136 第一表面 138 第二表面 140 第一邊緣 142 第二邊緣 144 第二腔室 93413.doc -14The best mode for carrying out the invention is described in connection with several preferred (four)-1 ports of the invention. It should be understood that the HI example is merely illustrative and should not be considered to limit the cost of the simple system. Figure 1 is an exploded view of an embodiment of an electret condenser microphone; y Figure 2 is a bottom view of the ECM shown in Figure 1; Figure 3 is a cross-sectional view taken along line 3-3 of Figure 2; 4 is a partial cross-sectional view taken along line 4-4 of FIG. 3; FIG. 5 is a plan view of one of the wire cloths usable in the ECM; and FIG. 6 is a cross-sectional view taken along line χ-χ of FIG. [Main component symbol description] 100 Microphone 101 Housing 102 Dust cover 104 Cup-shaped housing part 1〇5 Surface 106 Sound 埠93413.doc 1268116 107 Bottom surface 108 Ring assembly 108a Vibrating diaphragm 108b Ring member 109 Chamber 110 Spacer 111 Disc portion 112 rear plate 113 cylindrical portion 114 sound hole 115 flange 116 support member 118 acoustic resistance element 120 bottom outer casing portion 122 amplifier 130 sound inlet 埠 132 flange 136 first surface 138 second surface 140 first edge 142 Two edges 144 second chamber 93413.doc -14